Rotary wrench carriage



patented Jan. i1 5, i924.

warren snares I insist? earanr orrrca.

NnLsoN K. SMITH, or DALLAS, TEXAS, ASSIGNOB, or CHE-HALF TO GEORGE w. HOFF- MAN, or HOUSTON, TEXAS.

nornnv WRENCH oannraen.

Application filed September 80, 1921. Serial No. 504,452.

Texas, have invented certain new and useful I p m nt in Rotary Wrench Carriages,

. of which the following is a specification.

This invention relates to new and useful improvements in carriages for supporting pipe wrenches on well drilling rotaries.

t is customary to employ two wrenches in disconnecting the tool joints between sections of well drilling pipe. This invention has to do with a carriage adapted to be mounted on the rotary platform to support the pipe wrench which is engaged with the lower member of the tool joint.

The object of the invention is to provide a carriage which will yie'ldably support the wrench so as to permit the same to yield downwardly to a certain extent. A further object is to provide a carriage in which the wrench may be easily and readily placed and by which it will be held in proper position.

Another feature of theinvention is to provide a carriage which may be conveniently handled and placed in position.

@ne of the objects of the invention is to provide a carriage that is reversible so as to hold the wrench for screwing and unscrewing the sections of tool joints and the like. Another objectis to provide means on the carriage for knocking ofi the upper wrench in case'the tubing falls, thus preventing injury to the carriage and protecting the wrench carried thereby.

A construotion designed to carry out the invention will be hereinafter described ogether with other features of the invention.

The invention will be more readily understood from a reading of the followlng speci- ,fication and by reference to the accompanyscoping into a carriage member 11, which has a collar 12 at its lower end. Above the collar the carriage member is slotted so as to lighten it in weight. A. laterally offset yoke 13 is formed integral with the member 11 and is supported by a pair of curved arms 14 entending to the top of the member and servlng as handles to enable the workman to pick up the device and transport it. Curved braces 15 extend downwardly from the yoke and are formed integral with the collar 12. A transverse pin 16 driven into the post 10 within the slotted portion of the memberll limits the upward displacement of the memher and prevents the post from falling out of th member when the same is lifted by the handles let. i I

The collar 12 is counter bored at 17 to receive the upper end of a coiled spring 18 which encircles the post. The lower end' of the spring is seated in the counter bore 19 of a bottom collar '20 which is suitably fastened on the post. The post projects below the collar 20 so as to enter the usual aperture 'A in the platform 13 of an ordinary drilling rig. It will be seen that the member 11 may be depressed, but its downward movement is limited by the engagement of the collar 12 with the collar 20, at which time the spring 18 will be fullycompressed. However, the abutting of the two collars prevents crush ing ofthe Spring or other injury thereto. The spring ha sutficient tension to support the member 11 and if loaded under ordinary conditions, but to yield downwardly when subjected to a greater load or strength.

The yoke 13 is provided with apertures 21, located at each end thereof so as to receive a headed pin 22. The yoke has inclined rear walls 21. diverging from the center. The handle lever of a suitablepipe wrench, such asis illustrated .in my co-pending application Ser. No. 504:453 executed on an even date therewith, is inserted in the yoke'so as to lie against one of the rear walls 21 thereof, the pin 22 being passed thru an aperture which is provided in said handle lever. Either of the apertures 21 may be used according to the position. in which it is desired to hold the wrench. It will be seen that when it is desired to reverse the wrench it is removed from the yoke, turned over and-inserted against the other wall and the pin placed in the other aperture.

The carriage is, of course, free to be rotated so as to position the jaw 31 in proper relation to the lower' section of the tool joint. In applying the wrench the lever 32 is of course, released and the chain 33 swung outwardly, so as to be free to be engaged around the tool joint section. It will be seen that theworkman has only to release the lever 32 or fasten the same and is not' called upon to support the wrench or handle the same. When the chain of the wrench is removed from the tool joint it may be swung back and rested upon the up per end of the member 11. The wrench may be left in the yoke 13 and the whole device bodily removed from the rotary platform when desired. Also by rotating the post 10, the wrench may be swung to.

, vertically on the post and resiliently sustained, and means for mounting a pipe Wrench on the carriage member.

2. In a rotary well carriage, the combination of a post, a carriage member slidable vertically on the post and resiliently sustained, meansfor mounting a pipe wrench on the carriage member, and means for lim- Iioting the downward movement of the mem- 3. A resiliently sustained carriage member capable of yielding downwardly and having a laterally offset portion. for receiving and supporting a pipe wrench in position to engage adrill stem.

4. A resiliently sustained carriage member capable of yielding downwardly and having a laterallyofi'set portion for receiving and supporting a pipe wrench in position to engage a drill stem, and means for mounting the wrench on the carriage in a reverse position.

5. In a rotary well carriage, the combination of a post," a stop element on the lower portion of the post, a carriage member slidable on the post, a handle on the member, means for preventing the post from dropping from the member when the latter is lifted, a wrench receiving element carried by the member, and a coiled spring surrounding the post and supporting the mem-- ber.

6. In a rotary well carriage, the combination of a post, a carriage member slidable on the post, a handle on the member, means for preventing the post from dropping from and a-coiled spring surrounding the post and supporting the carriage member.

. 8. In a rotary well carriage, a post, a carriage member mounted to slide vertically on the post, a laterally offset yoke carried by the member forreceiving a pipe wrench, means for fastening the wrench in the yoke, a coiled spring surrounding the post and supporting the carriage member, and a curved arm' extending from the yoke to the body of the member and projecting above the same.

9. In a rotary well carriage, a post, a carriage member mounted to slide vertically on the post, a laterally offset yoke carried by the member for receiving a pipe wrench, means for fastening the wrench in the yoke, and va coiled spring surrounding the post and supporting the carriage member, the yoke having divergingrear walls for sustaining the wrench in reversed positions.

10. The combination with a rotar table, of a tong carrying means thereon, an means whereby the tong carrying means may auto-- matically be moved vertically relatively to the table with the movement of pipe tongs with which it is adapted to be connected.

11. A tong .holding device for rotary drilling machines comprising .a vertical member and a tong carrying means vertically movable thereon,.said means being arranged to automatically change its vertical position with a vertical movement of the tongs which it is adapted to carry.

1 A ton holding device for rotary drilling mac ines comprising an upright member, a tong carrying means vertically movable thereon, and a spring for yieldingly holding the said tong carrying-means in position. i

13. A tong holding device for rotary drilling machines comprising a post adapted to be supported on the machine, a tong holding member slidable on said post, and a spring for yieldably supporting the tongholding member. I

14. A tong holding device for rotary drilling machines, comprising. a post adapted to be supported on the machine, a bushing on said post, a tong holding member slidable on said post and'a spring between the bushing and tong holding member for yieldably supporting the latter. I

15. The combination with a rotary drilling'machine having a rotary table, of a tong carrying means carried thereby, tongs engaged by said tong carrying means and adapted to engagea section of pipe to thread of a pipe section when the tongs are in use.

16. The combination with a rotary drilling machine having a rotary table, of a tong carrying means carried thereby, tongs engaged by said tong carrying means and adapted to engage a section of pipe to thread it into a coupling upon rotation of the table,

and means whereby said tongs and tong carrying means may automatically move vertically, and horizontally relatively to the table whereby the tongs may change their position with the movement of a pipe section with which the tongs are adapted to engage. Q

17. In a rotary well carriage, the combination of a post adapted to engage the table-of a rotary, a sleeve mounted on the post, a jaw mounted on the sleeve and provided with a transverse slot, and means for fastening a pipe wrench in the slot of the jaw.

In tes tlmony whereof I afiix my signa ture.

NELSON K. SMITH. 

